662 GEOLOGY OF OHIO. 



ship, the coal is thirty-seven feet below the surface and one foot thick ; 

 a little north of the center of Section 29, Monroe township, it is forty-one 

 feet below the surface, three and one-half feet thick, and covered with 

 fifteen feet of sand rock ; north-west of the center of Section 28 it is sev- 

 enty-four feet from the surface and three feet thick ; south-east of center 

 of same section it is seventy-five feet from the surface and four inches 

 thick ; near the south-west corner of Section 33 it is fifty-one feet below 

 the surface, six feet six inches thick, and covered with thirty-three feet 

 of sand rock ; south-east of the center of the same section it is seventy- 

 one feet below the surface and three feet thick ; north-west of the center 

 of Section 26 it is seventy-four feet six inches from the surface and nine 

 and one-half feet thick ; in the north-west corner of Section 23 it is fifty 

 feet from the surface and eleven feet thick ; in the southern part of Sec- 

 tion 24 it is ninety-one feet ten inches from the surface and one foot thick ; 

 in the north-west corner of Section 36 the Norris coal is forty-one and one- 

 half feet from the surface and four and one-hilf feet thick. The section 



below the Norris coal is as follows : 



rr. 



Pire-clay 4 



Blue shale 63 



White limestone 9 



Black shale 4 



Shale 28 



Total 108 



Total from surface 154 



Near the center of the northwest section of Homer township, Morgan 

 county, and directly east of the center of Section 6, Trimble township, a 

 deep boring gives the following section with no show of coal : 



IT. IS. 



Earth , .' 9 



Soft bine shale, argillaceous 20 



Blue shale, hard S) 4 



Sand rock 53 



Shale 2 



Sand rock , 4 



Dark shale 17 



Iron ore 2 



Sandy shale with nodnles of iron ore 17 



Dark shale 2 



Same with hard nodnles 4 



White limestone 16 



Total 155 4 



The extreme eastern borings, disclosing heavy beds of limestone and 

 no coal, suggest the probability of deep local open water at the east dur- 



